DELTA 1 R/B(1)
| Launched | 9 June 1973 |
| Flight ended | 28 January 1974 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 6688 |
| COSPAR ID | 1973-039C |
| Observing |
Launched alongside
EXPLORER 49 DELTA 1 R/B(2) DELTA 1 DEB DELTA 1 DEB EXPLORER 49 DEB EXPLORER 49 DEB DELTA 1 DEB